MathGroup Archive 1992

[Date Index] [Thread Index] [Author Index]

Search the Archive

Clear Kernel History

  • To: Mathematica user's group <MathGroup at>
  • Subject: Clear Kernel History
  • From: Robby Villegas <Villegas at knox.bitnet>
  • Date: Thursday, February 27, 1992

     Sometimes when I have depleted most of the available memory during a
Mathematica session, especially on the Mac, I want to free some without
quitting the application and re-starting the front-end and kernel.  So I use
the Find box to search and destroy graphics cells, but sometimes I want to
free more space, and I'm reminded of the menu command "Clear Kernel History"
that existed in version 1.2 (on the Mac, at least) but doesn't in version 2
(as far as I can tell).  So I wrote a little command to Unprotect, Clear, and
then re-Protect those records that seemed to make up the kernel's history:
In, Out, InString, and MessageList.  My question is:  as long as I'm willing
to sacrifice those records of the session, is there any danger in clearing
those variables, in terms of interfering with the program itself and causing
problems (e.g. crashing) later on?  Also, if there's no such danger, are there
other sacrificeable records besides those four?

                                              Robby Villegas
                                              Knox College
                                              (Villegas at Knox.Bitnet)

  • Prev by Date: animation
  • Next by Date: question about exporting graphics
  • Previous by thread: Re: animation
  • Next by thread: question about exporting graphics